1
Question
Prove cos^2 θ+tan^2 θ−1sin^2 θ=tan^2 θ
Prove cos^2 θ+tan^2 θ−1sin^2 θ=tan^2 θ
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Solution
I think some error in your question
Q:(cos^2x+tan^x)-(1-sin^2x)=tan^2x
we have (1-sin^2x=cos^2x,you have study it in plus one)
Then LHS implies
(cos^2x+tan^x)-(cos^2x)
=tan^2x hence RHS
Q:(cos^2x+tan^x)-(1-sin^2x)=tan^2x
we have (1-sin^2x=cos^2x,you have study it in plus one)
Then LHS implies
(cos^2x+tan^x)-(cos^2x)
=tan^2x hence RHS
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